If you are interested in porting your Processing projects to Android devices, it's a very simple process. You'll need to first install the Android-Processing Library, and then set Processing to Android Mode. If you have an Android device and try this out, post about your progress. We may touch on this in class, but until then, feel free to browse this reference.
Here's some more information from the Processing WIKI:
The primary goal of this project is to make it foolishly easy to create Android apps using the Processing API. Once you have Processing on your machine (and the Android developer tools), you can simply write a line of code, hit 'Run' (or Ctrl-R), and have your sketch show up in the emulator as a working Android app. Select 'Present' (or use Ctrl-Shift-R) to have it run on an Android device that you have plugged into your machine.
Doing Processing development for Android promises the same streamlined, sketchbook-like production flow that Processing does on desktop. To create Android apps, you simply set Processing to “Android mode.” (Right now, you have to point to Google’s SDK, but that happens only once and may be removed in future versions.) Hit run, and your sketch launches in the Emulator. Plug in an Android device via USB, and it’ll run on your device. Soon, you should have one-click-export of apps in the way that you do Processing desktop apps.
link: http://wiki.processing.org/w/Android